NCR 7156, Руководство пользователя

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Chapter 6: Commands 7156 Owner’s Guide
September 1997 100
Print Bar Code (Receipt Station)
Selects the bar code type and prints a bar code for the ASCII characters entered. The
command is only valid at the beginning of a line. If the width of the bar code exceeds one
line, the excess data is not printed. Illegal data cancels the command.
There are two variations to this command: the first uses a NULL character to terminate the
string; the second uses a length byte at the beginning of the string to compensate for the
Code 128 bar code which can accept a NULL character as part of the data.
Note: Fixed-length codes can be aligned left, center, or right using the Align Positions
(1B 61) command. Variable-length codes are always center aligned.
The check digit is calculated for UPC and JAN (EAN) codes if it is not sent from the host
computer. Six-character zero-suppressed UPC-E tags are generated from full 11 or 12
characters sent from the host computer according to standard UPC-E rules. Start/Stop
characters are added for Code 39 if they are not included.
First Variation: String terminated with NULL Character
Hexadecimal Decimal ASCII
1D 6B m [d]n 00 29 107 m [d]n 0 GS k m [d]n NUL
0 = End of command.
m = 0-6 (see the table)
d = 32-126 (see the table)
n = 1-255 (see the table)
m Bar Code d
n, Length
0 UPC-A 48- 57 (ASCII numerals) Fixed Length: 11, 12
1 UPC-E 48- 57 Fixed Length: 11, 12
2 JAN13 (EAN) 48- 57 Fixed Length: 12, 13
3 JAN8 (EAN) 48- 57 Fixed Length: 7,8
4 Code 39 48- 57,
65- 90 (ASCII alphabet),
32, 36, 37, 43, 45, 46, 47 (ASCII
special characters)
d1 = dk = 42 (start/stop code is
supplied by printer if necessary)
Variable Length
5 Interleaved 2 of 5 48- 57 Variable Length
(Even Number)
6 Codabar 65- 68, start code
48- 57,
36, 43, 45, 46, 47, 58 Variable Length